1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/*
* Copyright © 2011 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
/** @file negative-prims.c
*
* Tests that glBeginTransformFeedback emits errors when attempting to
* draw primitives other than those allowed by the current transform
* feedback primitiveMode.
*
* From the EXT_transform_feedback spec:
*
* "The error INVALID_OPERATION is generated if Begin, or any
* command that performs an explicit Begin, is called when:
*
* * a geometry shader is not active and <mode> does not match
* the allowed begin modes for the current transform feedback
* state as given by table X.1."
*
* (the test also executes primitives that should pass, to ensure that
* the test is correctly generating GL errors just due to the bad
* primitives)
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
config.khr_no_error_support = PIGLIT_HAS_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
struct {
GLenum tf_prim;
GLenum prim;
} prims[] = {
{ GL_POINTS, GL_POINTS },
{ GL_LINES, GL_LINES },
{ GL_LINES, GL_LINE_STRIP },
{ GL_LINES, GL_LINE_LOOP },
{ GL_TRIANGLES, GL_TRIANGLES },
{ GL_TRIANGLES, GL_TRIANGLE_STRIP },
{ GL_TRIANGLES, GL_TRIANGLE_FAN },
{ GL_TRIANGLES, GL_QUADS },
{ GL_TRIANGLES, GL_QUAD_STRIP },
{ GL_TRIANGLES, GL_POLYGON },
};
static bool
test_one_prim(GLenum tf_prim, int i)
{
GLenum error;
const char *prim_name = piglit_get_prim_name(prims[i].prim);
const char *tf_name = piglit_get_prim_name(tf_prim);
glDrawArrays(prims[i].prim, 0, 4);
error = glGetError();
if (prims[i].tf_prim != tf_prim) {
if (error != GL_INVALID_OPERATION) {
printf("Expected GL error 0x%x, got 0x%x, when "
"rendering %s during %s transform feedback\n",
GL_INVALID_OPERATION, error,
prim_name, tf_name);
return false;
}
} else {
if (error != 0) {
printf("Unxpected GL error 0x%x when "
"rendering %s during %s transform feedback\n",
error,
prim_name, tf_name);
return false;
}
}
return true;
}
static bool
test_transform_feedback_prim(GLenum tf_prim)
{
bool pass = true;
int i;
glBeginTransformFeedbackEXT(tf_prim);
for (i = 0; i < ARRAY_SIZE(prims); i++) {
pass = pass && test_one_prim(tf_prim, i);
}
glEndTransformFeedbackEXT();
return pass;
}
enum piglit_result
piglit_display(void)
{
bool pass = true;
pass = pass && test_transform_feedback_prim(GL_POINTS);
pass = pass && test_transform_feedback_prim(GL_LINES);
pass = pass && test_transform_feedback_prim(GL_TRIANGLES);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
/* UNREACHED */
return PIGLIT_FAIL;
}
static const char *vs_source =
"void main()\n"
"{\n"
" gl_Position = gl_Vertex;\n"
"}\n";
static const char *fs_source =
"void main()\n"
"{\n"
" gl_FragColor = vec4(0.0, 1.0, 0.0, 0.0);\n"
"}\n";
void
piglit_init(int argc, char **argv)
{
float verts[] = {
-1, -1,
1, -1,
1, 1,
-1, 1
};
GLuint vbo, xfb, vs, fs, prog;
const char *varying = "gl_Position";
piglit_require_extension("GL_EXT_transform_feedback");
piglit_require_gl_version(30);
piglit_require_transform_feedback();
glGenBuffersARB(1, &vbo);
glBindBufferARB(GL_ARRAY_BUFFER_ARB, vbo);
glBufferDataARB(GL_ARRAY_BUFFER_ARB, 8 * sizeof(float),
verts, GL_DYNAMIC_DRAW);
glGenBuffersARB(1, &xfb);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, xfb);
glBufferDataARB(GL_TRANSFORM_FEEDBACK_BUFFER, 4096, NULL,
GL_DYNAMIC_DRAW);
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_source);
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_source);
prog = glCreateProgram();
glAttachShader(prog, vs);
glAttachShader(prog, fs);
glTransformFeedbackVaryings(prog, 1, &varying, GL_INTERLEAVED_ATTRIBS);
glLinkProgram(prog);
if (!fs || !vs || !prog)
piglit_report_result(PIGLIT_FAIL);
if (!piglit_link_check_status(prog))
piglit_report_result(PIGLIT_FAIL);
glUseProgram(prog);
glBindBufferRange(GL_TRANSFORM_FEEDBACK_BUFFER, 0, xfb, 0, 4096);
}
|
